Joe Scarborough and Mika Brzezinski ridiculed Harvard Law professor emeritus Alan Dershowitz on Thursday, agreeing that he deserved any blowback he got from liberals on Martha’s Vineyard over his defense of President Donald Trump.

Scarborough began the segment with a sarcastic crack, saying, “Unfortunately, the scourge of McCarthy-ism is back. It is sweeping from Bar Harbor down to Boca Raton and all points in between for Alan Dershowitz.”

The law professor had said recently that he had noticed a change in his social calendar — namely that his usual circle of liberal friends had begun to cut him out of their plans — as a result of his firm stance against the continuing Mueller investigation.

“Well, Professor Dershowitz says he is not whining — he is reveling in the fact that he is getting this cold shoulder. He says he is taking a principled unpopular stand on this issue and now is not getting invited, poor thing, to Martha’s Vineyard. I’m just not sure you how this goes down in steel country.

Are they sitting there in Lorain, Ohio, saying, ‘Oh, my God, we’re so sorry that Mr. Dershowitz has come into trouble because he has opposed the Mueller investigation?'”

Scarborough continued, “A frosty summer for Alan Dershowitz. And, you know, it’s very interesting. He claims that it is a principled stand, and yet he has been Donald Trump’s mouthpiece — Donald Trump’s bullhorn — in attacking Robert Mueller. This Russian investigation that you are talking about where Vladimir Putin has crossed the line — all the intel chiefs have said that they are focused explicitly on undermining American democracy. And he’s upset because doing the bidding of Donald Trump and, by extension, Vladimir Putin by attacking Robert Mueller III, he is not allowed to come to the trendiest clam bakes without feeling a cold shoulder.”

Dershowitz, after others poked fun at his comments noting the change, tweeted in his own defense.

(1/2) I’m reveling not whining. I’m proud of taking an unpopular, principled position that gets me shunned by partisan zealots. It’s not about me. I couldn’t care less about being shunned by such people. It’s about their unwillingness to engage in dialogue.

(2/2) It’s bad enough when college students demand trigger warnings and safe spaces to avoid hearing views with which they disagree. But it’s worse when it comes from professors and media people. It’s a dangerous sign of the times.

Dershowitz also noted that his liberal ideals had not changed, and that his “defense” of President Trump was a defense of civil liberties that he would stand for regardless of the person being targeted.

I have strongly opposed Trumps immigration policies and especially the separation of families. Do people not understand the difference between supporting everyone’s civil liberties and supporting a president’s policies?